i think that sticky means
the post will stick on top of the list no matter what.
so it will not get buried by time._________________Association of experimental electronics
www.koelse.orgflickr: cable porn group

The 1N914 and the 1N4148 are almost exactly the same. I haven't come across a circuit which quotes one and doesn't work with the other. You can however get diodes that switch faster than either of them._________________What makes a space ours, is what we put there, and what we do there.

I can't see anything wrong with it.
I'm not an expert at reading Op-Amp specs though.
Pinout, and power supply are fine, so I'd give it a go._________________What makes a space ours, is what we put there, and what we do there.

By the way, I'm currently building RJW's VCO and found that replacing the LF411 and LF442 with their TL "equivalents" doesn't always work. I can't get the 1V/Oct scaling right with these substitutes in. So the exact specs might be essential in some applications.

This might also affect the LF444 used in the SL's oscillators. I got mine to work with TL064's, but judging from my experience with the VCO, the original LF might have been better.

thanks for the info.
the "equivalents" are picked up whit only equal pinnouts . not by the specs

Ray W wrote:

Op Amp Substitution?
Pretty much any quad JFET input op-amp with the same pinout will do to replace the LF444 and pretty much any dual JFET input op-amp with the same pinout will do to replace the LF442. I chose these because they draw very little current and they are still in full production. There are many many JFET input op-amps in full production. Search for "JFET input" on your favorite part suppliers website and they'll be there.

Last edited by dnny on Thu Dec 15, 2005 9:14 pm; edited 1 time in total

I should probably add that my LF411 and 442 are still on order, so although I can't get the VCO to work properly with TL061 and TL062 replacements, I can't yet say it does work with the LF's! I'm just assuming that the reason I can't get it tuned is because I tried replacements. All other components are as specified and it does work fine apart from the tuning.

I should probably add that my LF411 and 442 are still on order, so although I can't get the VCO to work properly with TL061 and TL062 replacements,

Etaoin,

This is a bit off topic. Do you mind starting afresh in a new thread?- as I want to try and keep this thread reference material as far as possible- and of course open source- and no need for locking it. Thanks!

No offense mate, but I've got enough things on my plate right now- than having to chase list members who aren't thinking before pressing return. (This goes for everyone btw!)

I hope you understand

If you've got a component which works as a substitute for any component on Ray's site- then by all means- put it here. But if you have a problem with a substituted component listed on this thread, then please start a fresh thread- then everyone can gain knowledge from your discovered experiences- otherwise everything just gets buried.

The man that hath no music in himself, nor is not mov'd with concord of sweet sounds, is fit for treasons, stratagems and spoils; the motions of his spirit are dull as night and his affections dark as Erebus: Let no such man be trusted. - W. Shakespeare

Yeah,
Ray said there's some specific problem with the TLXXX series, I think it was in the VCO, can't remember, but apart from that they're fine._________________What makes a space ours, is what we put there, and what we do there.

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